Graphics.GL.Low.Shader

Documentation

data Program

A Program object is the combination of a compiled vertex shader and fragment shader. Programs have three kinds of inputs: vertex attributes, uniforms, and samplers. Programs have two outputs: fragment color and fragment depth. At most one program can be "in use" at a time. Same idea as binding targets it's just not called that.

Instances

Show Program

data ProgramError

The error message emitted by the driver when shader compilation or linkage fails.

Constructors

VertexShaderError String

FragmentShaderError String

LinkError String

Instances

Show ProgramError

Exception ProgramError

Typeable * ProgramError

newProgramSafe :: String -> String -> IO (Either ProgramError Program)

Same as newProgram but does not throw exceptions.

deleteProgram :: Program -> IO ()

Delete a program.

newProgram

Arguments

:: String

vertex shader source code

-> String

fragment shader source code

-> IO Program

Compile the code for a vertex shader and a fragment shader, then link them into a new program. If the compiler or linker fails it will throw a ProgramError.

useProgram :: Program -> IO ()

Install a program into the rendering pipeline. Replaces the program already in use, if any.

setUniform1f :: String -> [Float] -> IO ()

setUniform2f :: String -> [V2 Float] -> IO ()

setUniform3f :: String -> [V3 Float] -> IO ()

setUniform4f :: String -> [V4 Float] -> IO ()

setUniform1i :: String -> [Int] -> IO ()

setUniform2i :: String -> [V2 Int] -> IO ()

setUniform3i :: String -> [V3 Int] -> IO ()

setUniform4i :: String -> [V4 Int] -> IO ()

setUniform44 :: String -> [M44 Float] -> IO ()

setUniform33 :: String -> [M33 Float] -> IO ()

setUniform22 :: String -> [M22 Float] -> IO ()